| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure that allows a segment joint and a ring joint to be connected simultaneously, just by sliding a segment in the tunnel axial direction. ! SOLUTION: A segment joint surface has a male joint 1 located on the inner side than the joint surface, and a protruded female joint 2. A ring joint surface has a male joint on the side to be pressurized by a jack and a female joint on the opposite side. The female joint comprises claw plates 21 that face each other, and the joint resumes to the original shape due to elasticity of the two claw plates. The male joint is a plate body to be inserted between the claw plates, located on the female joint end surface, and is provided with a fitting window opened for inserting the claw plates of the female joint. A housing chamber for the male joint established on the segment joint surface has a space wider than the width of the female joint to be inserted therein, in the tunnel axial direction. Inside the housing chamber, the distance t |
